pwm_driver2_t* pwm_driver2_open(pwm_driver2_descriptor_ptr driver) { if (!pwm_driver2_prepare_device(driver)) { printf("Cannot prepare driver %d\n", driver->id); return NULL; } pwm_driver2_t* pwm_driver2 = malloc(sizeof(pwm_driver2_t)); pwm_driver2->pwm = pwm_open(driver->pwm, 50000); if (!pwm_driver2->pwm) { free(pwm_driver2); return NULL; } pwm_driver2->direction = gpio_open(driver->direction, GPIO_OUT); if (!pwm_driver2->direction) { pwm_close(pwm_driver2->pwm); free(pwm_driver2); return NULL; } pwm_driver2->enable = driver->enable; if (!gpio_write_direction_file(pwm_driver2->enable, GPIO_OUT)) { pwm_close(pwm_driver2->pwm); gpio_close(pwm_driver2->direction); free(pwm_driver2); return NULL; } pwm_driver2->pwm->zero = 0; pwm_set_duty(pwm_driver2->pwm, pwm_driver2->pwm->zero); gpio_write_value_file(pwm_driver2->enable, 0); return pwm_driver2; }
void pwm_driver2_close(pwm_driver2_t* pwm_driver2) { if (pwm_driver2 == NULL) return; gpio_write_value_file(pwm_driver2->enable, 0); gpio_close(pwm_driver2->direction); pwm_close(pwm_driver2->pwm); free(pwm_driver2); }
/** Turn off LCD backlight Turn off LCD backlight. @param void @return void */ void GPIOMap_TurnOffLCDBacklight(void) { DBG_IND("GPIOMap_TurnOffLCDBacklight: Adjust value %d\r\n", g_LCDBacklightLvl); if (g_LCDBacklightEn == TRUE) { #if (LCD_BACKLIGHT_CTRL == LCD_BACKLIGHT_BY_PWM) pwm_pwmDisable(PWMID_BLG_PCTL); pwm_close(PWMID_BLG_PCTL, TRUE); #elif (LCD_BACKLIGHT_CTRL == LCD_BACKLIGHT_BY_GPIO) gpio_clearPin(GPIO_LCD_BLG_PCTL); #endif g_LCDBacklightEn = FALSE; } }
/** Turn on LED Turn on LED. @param UINT32 uiLED: Which LED, could be the following GPIOMAP_LED_GREEN GPIOMAP_LED_RED GPIOMAP_LED_FCS //FOCUS @return void */ void LED_TurnOnLED(UINT32 uiLED) { DBG_IND("LED_TurnOnLED %d\r\n",uiLED); switch (uiLED) { case GPIOMAP_LED_GREEN: #if (LED_GREEN_CTRL == LED_GREEN_BY_GPIO) gpio_setPin(GPIO_GREEN_LED); #endif break; case GPIOMAP_LED_RED: #if (LED_RED_CTRL == LED_RED_BY_GPIO) gpio_setPin(GPIO_RED_LED); #endif break; case GPIOMAP_LED_FCS: #if (LED_FOCUS_CTRL == LED_FOCUS_BY_GPIO) gpio_setPin(GPIO_FOCUS_LED); #endif #if (LED_FOCUS_CTRL == LED_FOCUS_BY_PWM) { //set FOCUS LED brightness level PWM_CFG PWMInfo; if(pwm_open(PWMID_FOCUS_LED)!=E_OK) { pwm_stop(PWMID_FOCUS_LED); pwm_close(PWMID_FOCUS_LED, TRUE); pwm_open(PWMID_FOCUS_LED); } PWMInfo.uiDiv=220; PWMInfo.uiPrd=22; PWMInfo.uiFall=FcsLedPrdVal[FcsLedLvl]; PWMInfo.uiOnCycle=0; PWMInfo.uiInv=0; PWMInfo.uiRise=0; pwm_set(PWMID_FOCUS_LED, &PWMInfo); pwm_reload(PWMID_FOCUS_LED); } #endif default: break; } }
/*********************************************************************** * * Function: c_entry * * Purpose: Application entry point from the startup code * * Processing: * See function. * * Parameters: None * * Outputs: None * * Returns: Nothing * * Notes: None * **********************************************************************/ void c_entry(void) { static PWM_CHANNEL_SETUP_T pwm_channel_setup[2][7]; static PWM_SYSTEM_SETUP_T pwm_system_setup[2]; static PWM_UPDATE_CONTROL_T pwm_update_control[2]; /* Disable interrupts in ARM core */ disable_irq(); /* Setup miscellaneous board functions */ phy3250_board_init(); /* Set virtual address of MMU table */ cp15_set_vmmu_addr((void *) (IRAM_BASE + (256 * 1024) - (16 * 1024))); /* Initialize interrupt system */ int_initialize(0xFFFFFFFF); /* Install standard IRQ dispatcher at ARM IRQ vector */ int_install_arm_vec_handler(IRQ_VEC, (PFV) lpc32xx_irq_handler); /* Enable IRQ interrupts in the ARM core */ enable_irq(); /* Enable PWM3/4 clocks */ clkpwr_clk_en_dis(CLKPWR_PWM3_CLK, 1); clkpwr_clk_en_dis(CLKPWR_PWM4_CLK, 1); /* Install PWM3 and PWM4 interrupt handlers as a IRQ interrupts */ int_install_ext_irq_handler(IRQ_PWM3, (PFV) pwm3_user_interrupt, ACTIVE_LOW, 1); int_install_ext_irq_handler(IRQ_PWM4, (PFV) pwm4_user_interrupt, ACTIVE_LOW, 1); /* Disable SD/MMC output and select PWM3.x on the SD/MMC pins */ CLKPWR->clkpwr_ms_ctrl = CLKPWR_MSCARD_MSDIO_PIN_DIS; GPIO->p_mux_set = P_MAT21 | P_MAT20 | P_MAT03 | P_MAT02 | P_MAT01 | P_MAT00; /* Select PWM3.x on the LCD pins */ GPIO->p3_mux_set = P3_GPO10_MC2B | P3_GPO12_MC2A | P3_GPO13_MC1B | P3_GPO15_MC1A | P3_GPO16_MC0B | P3_GPO18_MC0A; /* Select PWM4.x on the LCD pins */ GPIO->p3_mux_set = P3_GPO6 | P3_GPO8 | P3_GPO9; /* Loop forever and let the demo syscle thru different steps */ while (1) { /* PWM3/4 clock is the Peripheral clock (13 MHz) */ /* PWM3 and PWM4 are not synchronized */ /* */ /* Seven single edge independently controlled outputs */ /* */ /* PWM3 prescaler: 2, period: 10000 ticks => fout = 650 Hz */ /* channel 1: single edge, duty cycle 14% */ /* channel 2: single edge, duty cycle 28% */ /* channel 3: single edge, duty cycle 42% */ /* channel 4: single edge, duty cycle 56% */ /* channel 5: single edge, duty cycle 70% */ /* channel 6: single edge, duty cycle 84% */ /* */ /* PWM4 prescaler: 2, period: 5000 ticks => fout = 1300 Hz */ /* channel 1: single edge, toggle @ 2000 */ /* channel 2: single edge, toggle @ 3000 */ /* channel 3: single edge, toggle @ 4000 */ /* open PWM3 */ pwmdev1 = pwm_open(PWM3, 0); pwm_ioctl(pwmdev1, PWM_SYSTEM_CONTROL, PWM_TIMER_RESET); pwm_system_setup[0].clock = PWM_CLOCK_PERIPHERAL; pwm_system_setup[0].prescale = 2; pwm_system_setup[0].period = 10000; pwm_system_setup[0].update = PWM_NO_UPDATE; pwm_ioctl(pwmdev1, PWM_SYSTEM_SETUP, (INT_32) &pwm_system_setup[0]); pwm_channel_setup[0][1].channel = 1; pwm_channel_setup[0][1].mode = PWM_SINGLE_EDGE; pwm_channel_setup[0][1].duty_option = PWM_WAV_DUTY_PER; pwm_channel_setup[0][1].duty = 14; pwm_ioctl(pwmdev1, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[0][1]); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_ENABLE, 1); pwm_channel_setup[0][2].channel = 2; pwm_channel_setup[0][2].mode = PWM_SINGLE_EDGE; pwm_channel_setup[0][2].duty_option = PWM_WAV_DUTY_PER; pwm_channel_setup[0][2].duty = 28; pwm_ioctl(pwmdev1, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[0][2]); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_ENABLE, 2); pwm_channel_setup[0][3].channel = 3; pwm_channel_setup[0][3].mode = PWM_SINGLE_EDGE; pwm_channel_setup[0][3].duty_option = PWM_WAV_DUTY_PER; pwm_channel_setup[0][3].duty = 42; pwm_ioctl(pwmdev1, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[0][3]); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_ENABLE, 3); pwm_channel_setup[0][4].channel = 4; pwm_channel_setup[0][4].mode = PWM_SINGLE_EDGE; pwm_channel_setup[0][4].duty_option = PWM_WAV_DUTY_PER; pwm_channel_setup[0][4].duty = 56; pwm_ioctl(pwmdev1, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[0][4]); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_ENABLE, 4); pwm_channel_setup[0][5].channel = 5; pwm_channel_setup[0][5].mode = PWM_SINGLE_EDGE; pwm_channel_setup[0][5].duty_option = PWM_WAV_DUTY_PER; pwm_channel_setup[0][5].duty = 70; pwm_ioctl(pwmdev1, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[0][5]); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_ENABLE, 5); pwm_channel_setup[0][6].channel = 6; pwm_channel_setup[0][6].mode = PWM_SINGLE_EDGE; pwm_channel_setup[0][6].duty_option = PWM_WAV_DUTY_PER; pwm_channel_setup[0][6].duty = 84; pwm_ioctl(pwmdev1, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[0][6]); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_ENABLE, 6); pwm_update_control[0].update = PWM_UPDATE; pwm_update_control[0].channels = 0x7E; pwm_ioctl(pwmdev1, PWM_UPDATE_CONTROL, (INT_32) &pwm_update_control[0]); pwm_ioctl(pwmdev1, PWM_SYSTEM_CONTROL, PWM_TIMER_RESTART); /* open PWM4 */ pwmdev2 = pwm_open(PWM4, 0); pwm_system_setup[1].clock = PWM_CLOCK_PERIPHERAL; pwm_system_setup[1].prescale = 2; pwm_system_setup[1].period = 5000; pwm_system_setup[1].update = PWM_NO_UPDATE; pwm_ioctl(pwmdev2, PWM_SYSTEM_SETUP, (INT_32) &pwm_system_setup[1]); pwm_channel_setup[1][1].channel = 1; pwm_channel_setup[1][1].mode = PWM_SINGLE_EDGE; pwm_channel_setup[1][1].duty_option = PWM_WAV_DUTY_ABS; pwm_channel_setup[1][1].duty = 2000; pwm_ioctl(pwmdev2, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[1][1]); pwm_ioctl(pwmdev2, PWM_CHANNEL_OUT_ENABLE, 1); pwm_channel_setup[1][2].channel = 2; pwm_channel_setup[1][2].mode = PWM_SINGLE_EDGE; pwm_channel_setup[1][2].duty_option = PWM_WAV_DUTY_ABS; pwm_channel_setup[1][2].duty = 3000; pwm_ioctl(pwmdev2, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[1][2]); pwm_ioctl(pwmdev2, PWM_CHANNEL_OUT_ENABLE, 2); pwm_channel_setup[1][3].channel = 3; pwm_channel_setup[1][3].mode = PWM_SINGLE_EDGE; pwm_channel_setup[1][3].duty_option = PWM_WAV_DUTY_ABS; pwm_channel_setup[1][3].duty = 4000; pwm_ioctl(pwmdev2, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[1][3]); pwm_ioctl(pwmdev2, PWM_CHANNEL_OUT_ENABLE, 3); pwm_update_control[1].update = PWM_UPDATE; pwm_update_control[1].channels = 0x0E; pwm_ioctl(pwmdev2, PWM_UPDATE_CONTROL, (INT_32) &pwm_update_control[1]); pwm_ioctl(pwmdev2, PWM_SYSTEM_CONTROL, PWM_TIMER_RESTART); delay(2500000); /* close PWM3 & PWM4 */ pwm_close(pwmdev1); pwm_close(pwmdev2); delay(2500000); /* PWM3/4 clock is the Peripheral clock (13 MHz) */ /* PWM3 and PWM4 are synchronized */ /* */ /* Four dual edge controlled outputs PWM3.2/4/6 and PWM4.2 */ /* (as in a stepper motor control application) and a single */ /* edge independently controlled output PWM4.3 */ /* PWM3.1/3/5 are disabled */ /* */ /* PWM3 prescaler: 5, period: 10000 ticks => fout = 260 Hz */ /* channel 1: disabled */ /* channel 2: dual edge, duty cycle 80%, offset 5% */ /* channel 3: disabled */ /* channel 4: dual edge, duty cycle 80% offset 30% */ /* channel 5: disabled */ /* channel 6: dual edge, duty cycle 80% offset 55% */ /* */ /* PWM4 prescaler: 5, period: 10000 ticks => fout = 260 Hz */ /* channel 1: disabled */ /* channel 2: dual edge, duty cycle 80% offset 80% */ /* channel 3: single edge, toggle @ 500 */ /* open PWM3 */ pwmdev1 = pwm_open(PWM3, 0); pwm_ioctl(pwmdev1, PWM_SYSTEM_CONTROL, PWM_TIMER_RESET); pwm_system_setup[0].clock = PWM_CLOCK_PERIPHERAL; pwm_system_setup[0].prescale = 5; pwm_system_setup[0].period = 10000; pwm_system_setup[0].update = PWM_NO_UPDATE; pwm_ioctl(pwmdev1, PWM_SYSTEM_SETUP, (INT_32) &pwm_system_setup[0]); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_DISABLE, 1); pwm_channel_setup[0][2].channel = 2; pwm_channel_setup[0][2].mode = PWM_DUAL_EDGE; pwm_channel_setup[0][2].duty_option = PWM_WAV_DUTY_PER; pwm_channel_setup[0][2].duty = 80; pwm_channel_setup[0][2].offset_option = PWM_WAV_OFFSET_PER; pwm_channel_setup[0][2].offset = 5; pwm_channel_setup[0][2].ini_state = 1; pwm_ioctl(pwmdev1, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[0][2]); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_ENABLE, 2); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_DISABLE, 3); pwm_channel_setup[0][4].channel = 4; pwm_channel_setup[0][4].mode = PWM_DUAL_EDGE; pwm_channel_setup[0][4].duty_option = PWM_WAV_DUTY_PER; pwm_channel_setup[0][4].duty = 80; pwm_channel_setup[0][4].offset_option = PWM_WAV_OFFSET_PER; pwm_channel_setup[0][4].offset = 30; pwm_channel_setup[0][4].ini_state = 1; pwm_ioctl(pwmdev1, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[0][4]); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_ENABLE, 4); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_DISABLE, 5); pwm_channel_setup[0][6].channel = 6; pwm_channel_setup[0][6].mode = PWM_DUAL_EDGE; pwm_channel_setup[0][6].duty_option = PWM_WAV_DUTY_PER; pwm_channel_setup[0][6].duty = 80; pwm_channel_setup[0][6].offset_option = PWM_WAV_OFFSET_PER; pwm_channel_setup[0][6].offset = 55; pwm_channel_setup[0][6].ini_state = 1; pwm_ioctl(pwmdev1, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[0][6]); pwm_ioctl(pwmdev1, PWM_CHANNEL_OUT_ENABLE, 6); pwm_update_control[0].update = PWM_UPDATE; pwm_update_control[0].channels = 0x7E; pwm_ioctl(pwmdev1, PWM_UPDATE_CONTROL, (INT_32) &pwm_update_control[0]); /* open PWM4 */ pwmdev2 = pwm_open(PWM4, 0); pwm_system_setup[1].clock = PWM_CLOCK_PERIPHERAL; pwm_system_setup[1].prescale = 5; pwm_system_setup[1].period = 10000; pwm_system_setup[1].update = PWM_NO_UPDATE; pwm_ioctl(pwmdev2, PWM_SYSTEM_SETUP, (INT_32) &pwm_system_setup[1]); pwm_channel_setup[1][2].channel = 2; pwm_channel_setup[1][2].mode = PWM_DUAL_EDGE; pwm_channel_setup[1][2].duty_option = PWM_WAV_DUTY_PER; pwm_channel_setup[1][2].duty = 80; pwm_channel_setup[1][2].offset_option = PWM_WAV_OFFSET_PER; pwm_channel_setup[1][2].offset = 80; pwm_channel_setup[1][2].ini_state = 1; pwm_ioctl(pwmdev2, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[1][2]); pwm_ioctl(pwmdev2, PWM_CHANNEL_OUT_ENABLE, 2); pwm_channel_setup[1][3].channel = 3; pwm_channel_setup[1][3].mode = PWM_SINGLE_EDGE; pwm_channel_setup[1][3].duty_option = PWM_WAV_DUTY_ABS; pwm_channel_setup[1][3].duty = 500; pwm_ioctl(pwmdev2, PWM_CHANNEL_SETUP, (INT_32) &pwm_channel_setup[1][3]); pwm_ioctl(pwmdev2, PWM_CHANNEL_OUT_ENABLE, 3); pwm_update_control[1].update = PWM_UPDATE; pwm_update_control[1].channels = 0x0E; pwm_ioctl(pwmdev2, PWM_UPDATE_CONTROL, (INT_32) &pwm_update_control[1]); pwm_ioctl(pwmdev1, PWM_SYSTEM_CONTROL, PWM_TIMER_SYNC); pwm_ioctl(pwmdev2, PWM_SYSTEM_CONTROL, PWM_TIMER_RESTART); pwm_ioctl(pwmdev1, PWM_SYSTEM_CONTROL, PWM_TIMER_GO); delay(2500000); /* close PWM3 & PWM4 */ pwm_close(pwmdev1); pwm_close(pwmdev2); delay(2500000); } }